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SHybridvsM240iPetrol
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Mercedes S 450 d 4MATIC Saloon, long version W223 vs BMW M240i F44: which is cheaper to run?

What each kilometre costs, depending on your driving profile and how you charge. Annual projection and cumulative savings over 10 years.

limousine · 2026 vs 2020 · 15,000 km/an · Mixed · Diesel 2.38 €/L · Petrol 95 2.17 €/L · Methodology
Annual mileage
15,000 km
5,000 km50,000 km
Driving mix

30 % City · 50 % Road · 20 % Motorway

Fuel price
Petrol 95 2.17 €/L · Diesel 2.38 €/Lprix-carburants.gouv.fr — moyenne nationale du 05/10/2026 ; EDF Tarif Bleu Base au 01/08/2026 ; DC autoroute : moyenne des réseaux sans abonnement

Result · yearly energy cost

AMercedes S 450 d 4MATIC Saloon, long version W223

2,570 €per year

7,2 L/100 km weighted · 17.13 € per 100 km · 1 082 L per year

Gap54 € per yearin favour of the M240i (−2 %)≈ 23 L diesel
BBMW M240i F44

2,516 €per year

7,7 L/100 km weighted · 16.77 € per 100 km · 1 160 L per year

The verdict changes with your usage
ProfileSplitAA · SBB · M240iGap
City70 / 25 / 570 % city · 25 % road · 5 % motorway2,871 €2,879 €Nearly level
Mixed30 / 50 / 2030 % city · 50 % road · 20 % motorway2,570 €2,516 €Nearly level
Long-distance10 / 40 / 5010 % city · 40 % road · 50 % motorway2,336 €2,239 €97 € · M240i

Cumulative saving for the M240i

1 year
54 €
3 years
161 €
5 years
269 €
10 years
537 €

Energy only. Excludes purchase, insurance, servicing, depreciation.

What produces these figures

WLTP combined
6.9 L/100 km · 7.3 L/100 km
Powertrain
Mild hybrid 48 V · Combustion
Power
367 ch · 340 ch
Kerb weight
2,255 kg · 1,525 kg

Other similar comparisons

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S 450 d 4MATIC Saloon, long version vs 740Ld xDrive

gap 742 €/year
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gap 309 €/year

Frequently asked questions

On a 100 km mixed trip, the Mercedes S 450 d 4MATIC Saloon, long version and BMW M240i have a near-identical cost per km with default parameters. The gap becomes significant once you enter your actual energy prices.

The BMW M240i is cheaper across all distances with default rates. If your energy prices differ significantly, simulate to see the real impact on your budget.

M240i